Which sublayer of tunica intima contains supportive elements, including collagen fibers and a variable amount of elastic fibers?

If the tunica externa of blood vessels is damaged, which of the following functions is compromised?

What major vein of the arm is shown in the following diagram? 

The following diagram shows the large vein that returns deoxygenated blood from the upper body and upper extremities of the heart. This vein is called:

The veins are blood vessels that carry deoxygenated blood back to the heart. Which of the following statements is incorrect about veins:

Mary is pregnant and is experiencing a consistent elevation in her blood pressure. Which of the following consequences of consistent and extremely high blood pressure is not true?

What is the relationship between blood viscosity and resistance?

The following factors can lower blood pressure, except:

Which of the following vessels occurs only on one side of the body?